Improvement in dental fins



ltuited (gauw 'geen eine.

PETER oRANs, Jug, (ROBERT MCKINLEY,` ADMINISTRATOR) ,oF A,PHILA- DELPHIA, PENNSYLVANIA.

Letters Patent No. 104,835, dated JimeQS, 1870.

IMPROVEMENT IN DENTAL PIN S.

The Schedule referred to in these Clhetters` Patent and making part of the same.

To all whom. it may' concern.:

Be it known that I, PETER GRANS, J r., cf the city and county ot' Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in the liIanufacture of Dentists Pins; and I do hereby dev clare that the following is a full and exact description thereof, reference being had to the accompanying drawing making part of this specification, in which- Fgure l is a'view of a wire, provided with several grooves, from which my pins are made.- I

Figure 2 is a view of the same wire, after bein twisted.- j

Figure 3 is a section of the same.

Figure 4 shows the mode of fastening artificial teeth to the plate by means of my improved pins.

The object of my invention isto dispense with the two-headed pins, with the pins cut out of platinum plate, the pins made of two round wires twisted together, and with the other devices which are now in use for securing artiiicial teeth to the base or plate, and to substitute for them pins made of a single wire, either atteued vor provided with one or more edges or longitudinal grooves, and afterward twisted and cut into suitable pieces.

Experience has shown me this to be the cheapest, and, at the same time, the best mode of effecting the desired purpose.

To enable others skilled in the art to make and use my invention, I will proceed todescrbe its construction and operation.

Platinum wire is drawn through suitable machinery,

for the purpose of either forming one or more longitudinal grooves a wa a, igs. 1, 2, and 3, o r to fiatten it, orto press it in a square, triangular, or any other angular shape.

After this is done, the so prepared wire is twisted,

in order to form -a thread, as shown iu fig. 2. It is l then out into pieces of suitable length, which I use as pins'to secure artificial teethtp their bases.

For vthis purpose I place my pins in suitable apertures'of the teeth-molds, and form the teeth over the pins, so that, when the baked teeth are taken from the molds, halt' of the piuv is firmly imbedded in the I teeth in the manner described, for the purpose of con.v

necting artificial teeth with a base. v y

PETER CRANS, JR.

Witnesses; A HERNIANN SPOENKE, H. U. HYNEMAN. 

